23 papers · ranked by Valyu relevance
Wolfram Pönisch, Thomas C.T. Michaels, Christoph A. Weber
Condensates in living cells can exhibit a complex rheology including viscoelastic and glassy behaviour. This rheological behavior of condensates was suggested to regulate polymerisation of cytoskeletal filaments and aggregation of amyloid fibrils. Here, we theoretically investigate how the rheological properties of…
Shuang-Huai Cheng, Hai-Ying Zhang, Ming-Yue Zhu, Li Min Zhou + 9 more
'Guo-Hui Yi' 'Xiao-Wen He' 'Jin-Yan Wu' 'Jin-Lei Sui' 'Hua Wu' 'Shi-Jiao Yan' 'Yun-Xia Zhang' 'Chuan-Zhu Lv' 'Arumugam Sundaramanickam'] Linear aggregation is present in some animals, such as the coordinated movement of ants and the migration of caterpillars and spinylobsters, but none has been reported on rotifers.…
Laurens Cherchye, Ian Crawford, Bram De Rock, Frederic Vermeulen
In the tradition of Afriat (Int Econ Rev 8:67-77, [1]), Diewert (Rev Econ Stud 40:419-425, [18]) and Varian (Econometrica 50:945-972, [39]), we provide a revealed preference characterisation of exact linear aggregation. This guarantees that aggregate demand can be written as a function of prices and aggregate income…
Enrico Lavagna, Sebastian Salassi, Davide Bochicchio, GIULIA ROSSI
Functionalizing the surface of metal nanoparticles can assure their stability in solution or mediate their self-assembly into aggregates with controlled shapes. Here we present a computational study of the colloidal aggregation of gold nanoparticles (Au NPs) isotropically functionalized by a mixture of charged and…
Jiawen Lv, Xiang Zhang, Zhou Li, Chi Wan Sung
Motivated by heterogeneous data distributions and task-dependent aggregation requirements in federated learning, we study information-theoretic secure aggregation of linear functions over a two-hop hierarchical network. The system comprises an aggregation server, an intermediate layer of U relays, and $UV$ users, where…
Soham Mukhopadhyay, Subhas C. Bera, Kabir Ramola
Self-aggregation in proteins has long been studied and modeled due to its ubiquity and importance in many biological contexts. Several models propose a two step aggregation mechanism, consisting of linear growth of fibrils and branch formation. Single molecule imaging techniques such as total internal reflection…
Peter Bühlmann, Nicolai Meinshausen
Large-scale data analysis poses both statistical and computational problems which need to be addressed simultaneously. A solution is often straightforward if the data are homogeneous: one can use classical ideas of subsampling and mean aggregation to get a computationally efficient solution with acceptable statistical…
Théo Bourdais, Houman Owhadi
Whether deterministic or stochastic, models can be viewed as functions designed to approximate a specific quantity of interest. We propose a data-driven framework that aggregates predictions from diverse models into a single, more accurate output. This aggregation approach exploits each model's strengths to enhance…
Ana Helena Tavares, Ana Silva, Tiago Freitas, Maria Costa + 3 more
Despite the advances on data analysis methodologies in the last decades, most of the traditional regression methods cannot be directly applied to large-scale data. Although aggregation methods are especially designed to deal with large-scale data, their performance may be strongly reduced in ill-conditioned problems…
Alejandro Cholaquidis, Ricardo Fraiman, Juan Kalemkerian, Pamela Llop
'Pamela Llop'] We introduce a nonlinear aggregation type classifier for functional data defined on a separable and complete metric space. The new rule is built up from a collection of M arbitrary training classifiers. If the classifiers are consistent, then so is the aggregation rule. Moreover, asymptotically the…
André Amado, Carlos Batista, Paulo R. A. Campos
Through a mechanistic approach we investigate the formation of aggregates of variable sizes, accounting mechanisms of aggregation, dissociation, death and reproduction. In our model, cells can produce two metabolites, but the simultaneous production of both metabolites is costly in terms of fitness. Thus, the formation…
Maria Ulan, Welf Löwe, Morgan Ericsson, Anna Wingkvist
Regression uses supervised machine learning to find a model that combines several independent variables to predict a dependent variable based on ground truth (labeled) data, i.e., tuples of independent and dependent variables (labels). Similarly, aggregation also combines several independent variables to a dependent…
Bob A. Baggett, Hannah E. Ritter, Margaret E. Melendez
France Mountain is located within Overton County which is part of the Upper Cumberland region of Middle Tennessee contains only one species of scorpion, also the only species native to the state, Vaejovis carolinianus. This species is poorly researched, and little is known about its life history and ecology. The…
Xu Liu, Gengxiang Chen, Yingguang Li, Lu Chen + 2 more
'Charyar Mehdi-Souzani'] Title: Abstract Data-driven modelling has shown promising potential in many industrial applications, while the expensive and time-consuming labelling of experimental and simulation data restricts its further development. Preparing a more informative but smaller dataset to reduce labelling…
Yu Huo, Hongpei Li, Xiao Wang, Xiaochen Du + 1 more
When analysing two-dimensional data sets, scientists are often interested in regions where one variable depends linearly on the other. Typically they use an ad hoc method to do so. Here we develop a statistically rigorous, Bayesian approach to infer the optimal partitioning of a data set into contiguous piece-wise…
Faisal M. Almutairi, Charilaos I. Kanatsoulis, Nicholas D. Sidiropoulos
'Nicholas D. Sidiropoulos'] Abstract—Multidimensional data have become ubiquitous and are frequently encountered in situations where the information is aggregated over multiple data atoms. The aggregation can be over time or other features, such as geographical location. We often have access to multiple aggregated…
Belinda Boehm, Christopher McNeill, David Huang
Understanding the solution-phase behaviour of organic semiconducting polymers is important for systematically improving the performance of devices based on solution-processed thin films of these molecules. Conventional polymer theory predicts that polymer conformations become more compact as solvent quality decreases…
Vladimir Batagelj
Recently some books dealing with the theoretical and algorithmic background of traditional aggregation functions were published. A problem with traditional aggregation is that often too much information is discarded thus reducing the precision of the obtained results. A much better, preserving more information…
Haikady N. Nagaraja, Shane Sanders, Alan D Hutson
The relationship between social choice aggregation rules and non-parametric statistical tests has been established for several cases. An outstanding, general question at this intersection is whether there exists a non-parametric test that is consistent upon aggregation of data sets (not subject to Yule-Simpson…
Justin Kwok, Giridar Vishwanathan, Kyung Sun Park, Bijal Patel + 3 more
Fluid flow is an inherent aspect of solution processing of conjugated polymers. Much of the existing work investigating the effect of flow has been phenomenological, lacking a direct and quantitative connection between the flow gradients and measurable quantities of the conformation or alignment of the conjugated…
Foto Afrati, Dimitris Fotakis, Angelos Vasilakopoulos
AI systems typically make decisions and find patterns in data based on the computation of aggregate and specifically sum functions, expressed as queries, on data's attributes. This computation can become costly or even inefficient when these queries concern the whole or big parts of the data and especially when we are…
Andrew McCluskey
The use of mathematical transformations to reduce non-linear functions to linear problems, which can be tackled with analytical linear regression, is commonplace in the chemistry curriculum. The linearization procedure, however, assumes an incorrect statistical model for real experimental data; leading to biased…
Jonathan Fine, Prageeth R Wijewardhane, Sheik Dawood Beer Mohideen, Katelyn Smith + 6 more
Chemical and physical stabilities are two key features considered in pharmaceutical development. Chemical stability is typically reported as a combination of potency and degradation product. For peptide products, it is common to measure physical stability via aggregation or fibrillation using the fluorescent reporter…